Pumped hydro: How does it work and what's the fuss?

The Tasmanian and Federal Governments are pushing ahead with plans to make Prime Minister Malcolm Turnbull's vision of Tasmania as "the battery of the nation" a reality.

Spillways at the Cethana power plant, one of the
Tasmanian sites to be considered for pumped hydro.

Government ministers met at Lake Cethana in Tasmania's north-west on Wednesday to unveil a list of 14 sites with high potential for pumped hydro energy storage.

So what are the issues, and what is pumped hydro?

Read the ABC News story by Natalie Whiting - “Pumped hydro: How does it work and what's the fuss?”